Hi bee canuck,
Don't think you'll have to worry about AHB (Africanized Honey Bees) in Canada. From what we're told, they prefer warmer climates.
Only had some limited experience with them, but they attack sooner, with less provocation, and they won't back off when you leave the area--they'll continue to pursue for many hundreds of yards. They also have this weird "anger" mode. You can see it in regular honey bees, but never to the degree that you see it in AHB.
Of course their one positive attribute is that they gather much more honey. I heard Warrick Kerr (the idiot who brought AHB to Brazil) saying on TV that Brazil's honey production had gone up many fold (I don't recall the exact number) since he accidentally released the african queens into the wild back in 1956.

Really not a problem any more than hot European hives are a problem. If it's hot, re-queen. It doesn't really matter if it's AHB or not.

AHB not a problem? Try telling that to people who have had a family member tortured to death by killer bees. Has there ever been a reported case of Europeans bees killing a grown man or woman?